Sr20det or rb25det?

[KoukiMongstahh]

Hi I'm looking for some advice or help with the RB25DET conversion into the 1997 240SX LE. I was wonderingp if its smarter to buy the RB25DET + transmission from the R33 to put in instead of the 97'+ S15 motor and transmission (SR20 DET). The SR20DET cost $4600 with transmission and the RB25DET is only $1900 with transmission. I'm pretty sure the specs for both the engines are similar. Are both the engines installations similar to each other? What I really want to know whomever had experience installing any of these engine, are there any major or difficult issues I will face during the swap or things I will need to modify? Please give me some information about both these engines, pros and cons, which is easier and less cost to do. My brother is a licensed mechanic of 6 years, me and him will be swapping it at the shop but I don't think he's ever went through these specific engines before so it'd be great to have some knowledge about this swap. If there are any other post like this for the 240sx RB25DET swap please post the link in the comments. Also where I will be getting the engine is locally at ----> http://eaglejapanmotor.com/home.php?cat=13

Thank you all, I appreciate greatly for all your help.

[2_Liter_Turbo]

It really depends on what you want out of the car. The RB25 is a solid engine, but it's heavy. If you are into drag racing, drifting, or you just want a higher HP/TQ street car, go with the RB. The SR is a lot lighter and sits further back in the engine bay than the RB, so if you want a nimble handling car, with plenty of HP potential, the SR would be a better choice. The upside of the SR is that it doesn't take much work and money to swap it in. The RB on the other hand, while initially cheaper, will take more money to properly swap in the car. Good luck and welcome to NICO!